US899567A

US899567A - Safety device or saw-guard.

Info

Publication number: US899567A
Authority: US
Inventors: George Schubert
Original assignee: Individual
Current assignee: Individual
Priority date: 1907-11-16
Filing date: 1907-11-16
Publication date: 1908-09-29
Anticipated expiration: 1925-09-29

Description

G, SGHUBERTQ SAFETYDEVIGE 0R SAW GUARD.

APPLICATION IILED NOV. 16, 1907.

Patented Sept. 29, 1908.-

GEORGE SCHUBERT, OF FORT WORTH, TEXAS.

SAFETY DEVICE OR SAW-GUARD.

Specification of Letters Patent.

Patented Sept. 29, 1908.

Application filed. November 16, 1907. Serial No. 402,390.

To all whom it may concern:

Be it known that I, GEORGE SCHUBERT, a citizen of the United States, residing at Fort Worth, in the county of Tarrant and State of Texas, have invented a new and useful Safety Device or Saw-Guard for Saws and Similar Cutting-Tool Operatives, of which the following is a specification.

My invention relates to a safety device for operatives of saws and similar cutting tools and consists of a spring or springs arranged to rest on the timber in frontof the saw and whip or press down on to the operatives fingers as the end of the timber nears the saw and thereby arrest said fingers or hand, or prevent them being engaged by the saw by mistake; and second, to arrange brackets on each side of the saw to avoid the timber raising and engaging the top of the saw.

In the drawings, Figure 1 shows a portion of a band saw provided with my invention, and Fig. 2 is a top plan view of same. Fig. 3 shows the invention as applied to a circular saw, showing both ends of the spring elevated by the timber. Fig. 4 is a similar view, with the timber omitted, and showing the springs in their normal position, and Fig. 5 is a top plan view of same.

Referring to Figs. 1 and 2; 1 represents a portion of the blade of a band-saw extending over a wheel above, (not shown,) and over a wheel 2 on a shaft 3 supported by the column i 4, 5 is the table supported by a bracket 6 secured to the column4. All arranged as in common use. 7 represents a slot formed in the column 4 a short distance above the table 5. 8 is a bracket secured adjustably in said slot 7 and extending to near the rear edge of the saw, and having said end perforated to receive a bolt 9. 10 is a s ring coiled on the bolt 9 on each side of the racket 8 and projecting with its body'12 rearward, said end can be united as seen in Fig. 2 or separated as seen in Fig. 5. The forward ends of said spring extend beyond the teeth of the saw and are bent downward as at 13. The body of said spring is provided with

several coils

14 and 15 to give it the desired elasticity. The coils 14 are turned inward and on each side of the blade of the saw to form a guidea nd prevent the ends of the spring from engaging the teeth of the saw. The rear ends of the springs are longer or heavier than the front ends, to cause said spring to move to the position seen in Fig. 4 after the timber is removed.

Figs. 3, 4 and 5 show the invention in use on a circular saw, 16 being the table supported by corner posts 17 17 braced by side bars 18. 19 is a saw operated in said frame, as in common use. 20 represents an arm secured to one-of the side boards 18 and projecting towards the saw, and with its end 21 turned forward. 22 22 are slotted brackets secured adjustably on the end 21, one on each side of the saw. 23 23 are strips secured on the lower end of the brackets 22 22 and formed of ample length to protect the teeth of the saw above the timber. The springs 10 are coiled or pivoted on the bolt 29 and constructed as above described.

As the timber 24 is fed to the saw it will raise the rear end of the spring and thereby press the front end down on the timber; and as the last end of the timber nears the saw it will passbeyond the front end of the springs and cause-said ends to Whip or spring down on to the operators fingers or hand and prevent it being carelessly shifted in to the saw. The brackets with the springs are adjusted to accommodate the standard thickness of the timber; and the front ends of the springs are of a length to extend to near the table after leaving the timber. The strips 23 23 in connection with the springs will prevent the timber from raising and reaching the top of the saw and shootingacross the plant to deal death and destruction.

Having described my invention; what I claim is 1. In a saw guard, a support extending over the saw, a spring pivoted on the support and having an end projecting behind the blade of the saw and having a forward end bent downward.

2. In a saw guard, a support extending over the saw, a spring pivoted on the sup ort and having an end projecting in front 0 the saw and bent downward and said spring having a heavier end projecting behind the blade of the saw to partly raise the forward 1 gaged by the material to be sawed to increase end of the spring. the tension or pressure of the spring.

3. In a saw guard, a support extendin '1! over the saw, a spring pivoted on the support GEORGE SOHUBEh 5 and having an end projecting in front of the Witnesses:

saw and bent downward and said spring 0. J. HARTMAN,

having an end projecting rearward and en- D. M. CRAIG.